#include "widget.h"
#include "ui_widget.h"

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
    //实例；使用tablewidget创建一个表格有删除和增加行列的功能
    //插入三行
    ui->tableWidget->insertRow(0);
    ui->tableWidget->insertRow(1);
    ui->tableWidget->insertRow(2);

    //插入三列
    ui->tableWidget->insertColumn(0);
    ui->tableWidget->insertColumn(1);
    ui->tableWidget->insertColumn(2);

    //设置表头
    ui->tableWidget->setHorizontalHeaderItem(0,new QTableWidgetItem("学号"));
    ui->tableWidget->setHorizontalHeaderItem(1,new QTableWidgetItem("姓名"));
    ui->tableWidget->setHorizontalHeaderItem(2,new QTableWidgetItem("年龄"));

    //设置表中内容
    ui->tableWidget->setItem(0,0,new QTableWidgetItem("1001"));
    ui->tableWidget->setItem(0,1,new QTableWidgetItem("张三"));
    ui->tableWidget->setItem(0,2,new QTableWidgetItem("19"));

    ui->tableWidget->setItem(1,0,new QTableWidgetItem("1002"));
    ui->tableWidget->setItem(1,1,new QTableWidgetItem("李四"));
    ui->tableWidget->setItem(1,2,new QTableWidgetItem("19"));

    ui->tableWidget->setItem(2,0,new QTableWidgetItem("1003"));
    ui->tableWidget->setItem(2,1,new QTableWidgetItem("王五"));
    ui->tableWidget->setItem(2,2,new QTableWidgetItem("19"));
}

Widget::~Widget()
{
    delete ui;
}


void Widget::on_pushButton_insetRow_clicked()
{
     int row = ui->tableWidget->rowCount();
     ui->tableWidget->insertRow(row);
}


void Widget::on_pushButton_deletRow_clicked()
{
    int row = ui->tableWidget->currentRow();
    ui->tableWidget->removeRow(row);
}

void Widget::on_pushButton_insetCol_clicked()
{
    int col = ui->tableWidget->columnCount();
    const QString& text = ui->lineEdit->text();
    ui->tableWidget->insertColumn(col);
    ui->tableWidget->setHorizontalHeaderItem(col,new QTableWidgetItem(text));
}

void Widget::on_pushButton_deletCol_clicked()
{
    //删除一列
    //首先获取当前选择的列数
    int col = ui->tableWidget->currentColumn();
    ui->tableWidget->removeColumn(col);
}
